Mathematics, 25.01.2022 02:40 cldantesBanana

sarah work at a concession stand for 2 hours and erans 22.50$, but if she works for 4 hours she earns $45. what is the rate of change

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sarah work at a concession stand for 2 hours and erans 22.50$, but if she works for 4 hours she earn...